1 files changed, 66 insertions, 0 deletions
diff --git a/graphics/optipng/patches/patch-ac b/graphics/optipng/patches/patch-ac
new file mode 100644
index 00000000000..bc5ed49735f
--- /dev/null
+++ b/graphics/optipng/patches/patch-ac
@@ -0,0 +1,66 @@
+$NetBSD: patch-ac,v 1.1 2006/04/19 17:02:22 wiz Exp $
+
+--- png_write_sig.c.orig	2006-04-19 15:45:16.000000000 +0200
++++ png_write_sig.c
+@@ -0,0 +1,61 @@
++/* png_write_sig.c from libpng-1.2.9 */
++
++/* pngwutil.c - utilities to write a PNG file
++ *
++ * Last changed in libpng 1.2.9 April 14, 2006
++ * For conditions of distribution and use, see copyright notice in png.h
++ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
++ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
++ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
++ */
++
++#define PNG_INTERNAL
++#include "png.h"
++
++/* Simple function to write the signature.  If we have already written
++ * the magic bytes of the signature, or more likely, the PNG stream is
++ * being embedded into another stream and doesn't need its own signature,
++ * we should call png_set_sig_bytes() to tell libpng how many of the
++ * bytes have already been written.
++ */
++void /* PRIVATE */
++png_write_sig(png_structp png_ptr)
++{
++   png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
++   /* write the rest of the 8 byte signature */
++   png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
++      (png_size_t)8 - png_ptr->sig_bytes);
++   if(png_ptr->sig_bytes < 3)
++      png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
++}
++
++/* pngwio.c - functions for data output
++ *
++ * Last changed in libpng 1.2.3 - May 21, 2002
++ * For conditions of distribution and use, see copyright notice in png.h
++ * Copyright (c) 1998-2002 Glenn Randers-Pehrson
++ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
++ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
++ *
++ * This file provides a location for all output.  Users who need
++ * special handling are expected to write functions that have the same
++ * arguments as these and perform similar functions, but that possibly
++ * use different output methods.  Note that you shouldn't change these
++ * functions, but rather write replacement functions and then change
++ * them at run time with png_set_write_fn(...).
++ */
++
++/* Write the data to whatever output you are using.  The default routine
++   writes to a file pointer.  Note that this routine sometimes gets called
++   with very small lengths, so you should implement some kind of simple
++   buffering if you are using unbuffered writes.  This should never be asked
++   to write more than 64K on a 16 bit machine.  */
++
++void /* PRIVATE */
++png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
++{
++   if (png_ptr->write_data_fn != NULL )
++      (*(png_ptr->write_data_fn))(png_ptr, data, length);
++   else
++      png_error(png_ptr, "Call to NULL write function");
++}